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Deep vein thrombosis during prolonged mechanical ventilation despite prophylaxis.
Emad H Ibrahim1, Manuel Iregui, Donna Prentice
1Pulmonary and Critical Care Division, Washington University School of Medicine, St. Louis, MO, USA.
Critical Care Medicine
|April 10, 2002
Summary
Deep vein thrombosis (DVT) affects nearly a quarter of patients on prolonged mechanical ventilation, even with prophylaxis. Further research into alternative prevention and early detection strategies is crucial for this high-risk group.
Area of Science:
- Critical Care Medicine
- Vascular Medicine
- Pulmonary Medicine
Background:
- Deep vein thrombosis (DVT) is a significant concern in critically ill patients.
- Prolonged mechanical ventilation is a known risk factor for DVT.
- Effective DVT prevention strategies are crucial in intensive care units (ICUs).
Purpose of the Study:
- To investigate the prevalence of DVT in patients requiring extended mechanical ventilation in the ICU.
- To identify risk factors associated with DVT development in this population.
- To assess the impact of DVT on clinical outcomes.
Main Methods:
- Prospective cohort study conducted in a university-affiliated urban teaching hospital's medical ICU.
- Enrolled patients requiring mechanical ventilation for over 7 days.
- Utilized serial duplex ultrasonography every 7 days to detect DVT; monitored for pulmonary embolism, mortality, and length of stay.
Main Results:
- 23.6% of 110 mechanically ventilated patients developed DVT despite 100% prophylaxis.
- DVT was associated with underlying malignancy and longer central venous catheterization duration.
- Patients with DVT had a higher incidence of pulmonary embolism (11.5% vs. 0.0%).
Conclusions:
- DVT is common in ICU patients on prolonged mechanical ventilation, even with prophylaxis.
- Current prevention strategies may be insufficient for this high-risk group.
- Alternative prevention strategies and early detection methods are warranted to reduce DVT-related morbidity.